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Finding the Fourth Proportional to 800.58, 1,199.25 and 727.86

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Solution

The fourth proportional to 800.58, 1,199.25 and 727.86 is: 1,090.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.58 : 1,199.25 = 727.86 : x
  2. Step 2: Convert to fraction form
    800.58/1,199.25 = 727.86/x
  3. Step 3: Cross multiply
    800.58x = 1,199.25 × 727.86
  4. Step 4: Simplify right side
    800.58x = 872,886.11
  5. Step 5: Solve for x
    x = 872,886.11/800.58
  6. Step 6: Final answer
    x = 1,090.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.